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Nutrient and Energy Apparent Digestibility of Protein-Based Feed Ingredients and Effect of the Dietary Factors on Growth Performance and Feed Utilization of Sobaity Seabream, Sparidentex hasta

Authors :
Seemab Zehra
Joseph Leopoldo Q. Laranja
Aboobucker Siddik Abulkasim
Reda Saleh
Paulo H. De Mello
Edoardo Pantanella
Jorge Alarcon
Abdulaziz M. Al-Suwailem
A. Al Shaikhi
Brett D. Glencross
Asaad H. W. Mohamed
Source :
Animals, Vol 14, Iss 6, p 933 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

Two separate feeding trials were undertaken to benchmark a series of commercial diets and determine the nutrient and energy apparent digestibility coefficients of a variety of protein-based feed ingredients when fed to sobaity seabream, Sparidentex hasta. In Experiment 1, triplicate groups of fish (initial body weight: 330.5 ± 2.6 g) were fed with one of three locally available diets containing crude protein (CP) levels ranging from 44 to 46% of dry matter (DM), each with ~12% crude fat. Fish grew at around 3.2 g day−1 with a specific growth rate (SGR) of 0.7% day−1. Both the feed conversion ratio (FCR) and protein efficiency ratio (PER) were significantly better in fish fed diets, which contained the highest (46.4%) crude protein level. Overall, the data from these preliminary studies suggest that the best performance by sobaity seabream was obtained with a diet containing 46% crude protein, 20 MJ/kg, and a protein-to-energy ratio of 23 mg/kJ. In Experiment 2, fish with an initial body weight of 319 ± 7 g were held in 11 tanks and fed reference (D1) and test diets (D2–D11) for 7 days before fecal collection. This process was repeated twice in a blocking arrangement to generate three replicates. Each of the ten test diets contained 30% of a test ingredient, with the remaining 70% proportionally identical to the D1 diet. Diet apparent digestibility coefficients (ADCs) were measured, and the diet ADCs were then used to derive the protein and energy ADCs for the individual test ingredients. Ingredient protein ADC ranged between 75.5 and 93.9%, while ingredient energy ADC ranged between 66.8 and 81.2%.

Details

Language :
English
ISSN :
20762615
Volume :
14
Issue :
6
Database :
Directory of Open Access Journals
Journal :
Animals
Publication Type :
Academic Journal
Accession number :
edsdoj.8e243dab6b154f0abcafdb729beff982
Document Type :
article
Full Text :
https://doi.org/10.3390/ani14060933